Correspondence 1089linear and it can be stretched further without being damaged. It is also softer and more pleasant to wear. The high linearity means that the extensometers applied to chest and abdomen only need to be stretched to approximately the same value to have identical outputs for a given change in circumference. This means that the new RR would be easier to apply and the output more accurate. It therefore has more potential in the field of respiratory pattern analysis than the original version.

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